Download or read book The Asymptotic Analysis of a Closed Crack Tip Terminating at an Interface written by Ann Lisa Burgarella and published by . This book was released on 1984 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The asymptotic analysis of an open crack tip terminating at a bimaterial interface written by Mustafa H. Günay and published by . This book was released on 1986 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Asymptotic Fields for Cracks Terminating at Bi material Interface with Arbitrary Angles written by Xiao Liu and published by . This book was released on 2015 with total page 188 pages. Available in PDF, EPUB and Kindle. Book excerpt: The bi-material crack problem is an interesting and important topic in the field of fracture mechanics. The existing mainstream solutions, either analytical or computational, are commonly focused on some specific cases, e.g., a crack lying on exactly the bonded border of dissimilar materials, or a crack impinging upon a bi-material interface at a right angle. However, little attention is paid to the general cases, i.e., cracks approaching or attacking the material divided border arbitrarily, which is more likely to happen in the engineering products. With any possibility of the crack's incidence angle, the asymmetric nature of the geometry and the materials property induces more difficulties in the mathematical formulation of the crack-tip stress field. The conventional analytical methods may not be a convenient way for the derivation, especially of the fracture parameters. For this end, in this study, the Williams' expansion method is exploited to investigate the two-dimensional/three-dimensional fracture problem in which the crack terminates at a biomaterial interface with an arbitrary angle of incidence. The characteristic equation is obtained and solved to investigate the distribution of dominant roots. Mathematically, a matrix-based system is developed, which can be easily used to formulate the general asymptotic solution of the singular stress and displacement fields surrounding the crack-tip. The theory of singularities is introduced to represent the mixed-mode nature of the solution for the arbitrarily-oriented crack. This concept is further employed for the cases with complex singularities. After that, the relationship of the asymptotic field and the linear elastic fracture parameters is established directly through a linear system. In addition, taking advantage of the enriched element approach, the derived formulation in this study is programmed and implemented in a finite element analysis. This provides an efficient and effective method for simulating and solving different types of crack problems, especially with complicated geometries, loading patterns and material combinations. Then different mixed-mode fracture criteria for predicting the direction of crack growth are introduced. With the method discussed in this study, the maximum circumferential stress criterion is considered to be the most appropriate one, but needs to be slightly modified for multiple material problems. Finally, some examples of numerical solution of the asymptotic fields are demonstrated using the computed stress intensity factors and the developed matrix system for the general crack cases with an arbitrary impinging angle with respect to an interface. The numerical results for specific cases are compared with the existing references.

Download or read book Near tip Fields for Interface Cracks written by Muhammed Taher Abu Saif and published by . This book was released on 1993 with total page 254 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Journal of Applied Mechanics written by and published by . This book was released on 1991 with total page 1158 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book A Closed Crack Tip Terminating at an Interface written by Maria Comninou and published by . This book was released on 1978 with total page 4 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1994 with total page 836 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Stress Intensity Factors in Two Bonded Elastic Layers Containing Cracks Perpendicular to and on the Interface Part 1 Analysis written by and published by . This book was released on 1980 with total page 34 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Highly Transient Elastodynamic Crack Growth in a Bimaterial Interface Higher Order Asymptotic Analysis and Optical Experiments written by and published by . This book was released on 1992 with total page 98 pages. Available in PDF, EPUB and Kindle. Book excerpt: A higher order asymptotic analysis of the transient deformation field surrounding the tip of a crack running dynamically along a bimaterial interface is presented. An asymptotic methodology is used to reduce the problem to one of the Riemann-Hilbert type. Its solution furnishes displacement potentials which are used to explicitly evaluate the near-tip transient stress field. Crack-tip fields corresponding to crack speeds up to the lower of the two shear wave speeds are investigated. An experimental study of dynamic crack growth in PMMA/ steel interfaces using the optical method of CGS and high speed photography, is also described. Transonic terminal speeds (up to 1.4c sub s(PMMA) and initial accelerations (approx. 10(8)m/secz92)) are reported and discussed. Transient effects are found to be severe and more important than in homogeneous dynamic fracture. For subsonic crack growth, these experiments are used to demonstrate the necessity of employing a fully transient expression in the analysis of optical data to accurately predict the complex dynamic stress intensity factor history.

Download or read book Applied Mechanics Reviews written by and published by . This book was released on 1988 with total page 702 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book A Study of Crack tip Fields and Fracture in Elastic plastic Materials written by Myoungseob Kim and published by . This book was released on 1992 with total page 222 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Asymptotic Analyses of Singularities and Angular Stress Distributions Around Crack Tip with Crack Perpendicular to the Bimaterial Interface written by Ruiyun Wu and published by . This book was released on 1992 with total page 208 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Sensors in Electronic Packaging written by Charles Ume and published by . This book was released on 1995 with total page 140 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Paper written by and published by . This book was released on 1991 with total page 386 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Computational Fluid and Solid Mechanics 2003 written by K.J Bathe and published by Elsevier. This book was released on 2003-06-02 with total page 2485 pages. Available in PDF, EPUB and Kindle. Book excerpt: Bringing together the world's leading researchers and practitioners of computational mechanics, these new volumes meet and build on the eight key challenges for research and development in computational mechanics.Researchers have recently identified eight critical research tasks facing the field of computational mechanics. These tasks have come about because it appears possible to reach a new level of mathematical modelling and numerical solution that will lead to a much deeper understanding of nature and to great improvements in engineering design.The eight tasks are: - The automatic solution of mathematical models - Effective numerical schemes for fluid flows - The development of an effective mesh-free numerical solution method - The development of numerical procedures for multiphysics problems - The development of numerical procedures for multiscale problems - The modelling of uncertainties - The analysis of complete life cycles of systems - Education - teaching sound engineering and scientific judgement Readers of Computational Fluid and Solid Mechanics 2003 will be able to apply the combined experience of many of the world's leading researchers to their own research needs. Those in academic environments will gain a better insight into the needs and constraints of the industries they are involved with; those in industry will gain a competitive advantage by gaining insight into the cutting edge research being carried out by colleagues in academia. Features - Bridges the gap between academic researchers and practitioners in industry - Outlines the eight main challenges facing Research and Design in Computational mechanics and offers new insights into the shifting the research agenda - Provides a vision of how strong, basic and exciting education at university can be harmonized with life-long learning to obtain maximum value from the new powerful tools of analysis

Download or read book Fracture Mechanics written by Fazil Erdogan and published by ASTM International. This book was released on 1995 with total page 716 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book International Aerospace Abstracts written by and published by . This book was released on 1999 with total page 1016 pages. Available in PDF, EPUB and Kindle. Book excerpt: